Coherent light generators – Particular active media – Gas
Patent
1990-05-17
1991-07-16
Scott, Jr., Leon
Coherent light generators
Particular active media
Gas
372701, 372 61, H01S 322
Patent
active
050330560
ABSTRACT:
A gas laser has a closed gas flow channel in which a gas flows at high velocity through a discharge chamber, the gas discharge burning between at least two electrodes extending transversely of the gas flow. A cross-current blower for maintaining the gas flow has an axis of rotation which runs parallel to the optical axis and buckets are disposed substantially free-standing such that the gas stream flows twice through the bucket wheel, the delivery side of the blower being separated from the intake side at the inner wall of the gas flow channel by a baffle body extending in direction of the axis of the blower and reaching the outer edges of the buckets. To reduce turbulence occurring on the delivery side of the blower in the vicinity of the inner wall of the flow channel and to achieve a high pressure difference between the intake and delivery side with a stable characteristic, a side channel branches off from the gas flow channel at the inner wall on the delivery side, the flow baffle body forming the outer wall of the side channel and the side channel returning the branched-off gas stream to the blower buckets. The inner wall of the side channel is formed by an additional baffle body extending in the same direction as the axis of the blower.
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Heraeus Holding GmbH
Jr. Leon Scott
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